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Windows 7: TV display issue, need to reverse a change?

New to the forum, I've bit of a doozy unfortunately:I've a HP windows 7 laptop, it was hooked up to a generic 46" telly, working fine,I was altering the resolution and must have selected one that wasn't compatible with the TV, now when I have my HDMI cable plugged in from the TV nothing displays on the TV and my laptop cycles every 5 seconds or so from a blank screen to a 3 second flash up saying my screen is not at optimal resolution. The laptop works fine with its native display when not hooked up to the TV, is there any way to rollback the change I made? I can't find anything online and there's no option to change display properties on the TV when its not plugged in, tearing my hair out here...:-( Any advice would be greatly appreciated....

TV display issue, need to reverse a change?

Display screen black and blank- is mobile pc display the issue?I started having issues yesterday, the day after I installed teamviewer a program that is on my iPad also to remotely control the laptop. At first the screen started freezing when I was in the middle of a Java game. So I restarted the laptop only to have it freeze at the main screen (after login). ...

display language changewhen i moved to spain from the uk last year i bought a laptop here
windows 7 home premium was pre-installed
at some point and i don't remember how i changed the display language from spanish to english
i have just bought another laptop which also has windows 7 home premium installed
and i can't...

General Discussion

Display Language - ChangeHow to Change the Display Language in Vista and Windows 7 Ultimate and Enterprise
This will show you how to change the display language that Vista and Windows 7 Ultimate and Enterprise uses to display text in wizards, dialog boxes, menus, and other items in the user interface (UI).
By default...

Tutorials

Why my extended display went on reverse?I've tried to use projector with my laptop with window 7 os, for my gig, but it went on reverse, the laptop became 2 and the projector to 1, iv'e tried to adjust the resolution to 1280-720, nothing happen, keep on trying but still projector became my desktop screen and laptop is extended monitor,...

Graphic Cards

Display - Change Main DisplayHow to Change the Main Display in Windows 7
If you have more than one monitor or display connected to your PC, then this will show you how to change and make one of these selected displays your default main display in Windows 7.
You can also drag and drop the monitors to arrange them in the...